Improvement in grain-separators



D. LADD.

Grain Winnower.

Patented Jan. 25, T87 0.

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Letters Patent No. 99,093, dated J anudry 25, 1870.

IMPROVEMENT IN .G-RAIN-SEPARATORS.

The Schedule referred to in these Letters Patent and making part of thesame.

To whom it may concern Be it known that I, DENNIS LADD, of Chicago, in"the county of Cook, and State of Illinois, have invented a new anduseful Improvement in Grain-Separators; and Ido declare that thefollowing is a true and accurate description thereof, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon, and being a part of this specification.

Figure 1 is a perspective view of my invention, broken off 'at parts toshow its mechanism.

Figure 2 is a detached sectional view of the strawcarrier.

A represents the frame which supports all the apparatus.

B, the ordinary threshing-cylinder, is provided with the concave 0,.thewhole being encased by the sides D.

E is a straw-carrier for conveying the straw from the cylinder after ithasbeen cleaned, andis constructed of iron or other metal rods or wires,with the outer ends bent, forming a chain, as at F, so thatthey areconnected, formingone continuous or endless chain, which derives motionfrom'pulleys G, H, and J, connected by belt to the pulley on the outerend of cylinder shaft K. v

. Belowand at the rear of cylinder B is placed fan L, which receivesmotion by belt from shaft K Below and under cylinder B is grate.M, whichextends to and on top of division-board N.

Hopper-bonnet O,is firmly secured below grate M, with its lower end ormouth extending into the upper end of rotating screen P, and receivesmotion by means of the bevel-gear wheels 2, shaft 3. pulleys 4 and H.

Fluke-boards or air-guides are placed in front of the fan and back ofthe grate-bars M, and are secured in the desired position by the aid ofpawls and ratchets 5.

The rotating cylinder or screen P is or maybe-covcred with wired clot-hof different sized meshes, the division being at S.

The receptacle-box 'l. is suspended by rod U and yoke W to the frame A,and is provided with parti tion-board Y, and is so constructed that itmay be tilted so, as to discharge the grain on either side through theorifices 6. I

- Having named the various parts of my invention, I will now describeits operation.

The unthreshed grain and straw are fed into-the machine over apron 7.The straw is retained upon the carrier after being threshed, and iscarried back from the thresber by theaction of said carrier when themachine is in motion, .while the grain and chafi' pass down, and areseparated by the grate-bars.

The chafi passes out over the board N, while the grain passes on intoand through the bonnet 0 into the screen P, where "the grain passesthrough the meshes of the wire, and the refuse matter is thrown out atthe lower end of the screen.v

The above-mentioned fiukes serve to elevate or depress the current ofair, as may be desired. It is suggested that a brush be attached to'thelower side of the division-board N, which will come in contact with theface of the screen, serving to keep it always clean. The whole thusforms a very convenient and compact machine for the purposes intended.

That I claim as my invention, and desire to secure by Letters Patent, is

1. The'constructipn and arrangement of the guideboard N, the grated barsM, the bonnet O, and revolving screw P, as above set forth, and for thepurposes above specified.

2. In combination with the above, the carrier E, with its devices forrotation, and the tilting-box T, when constructed, arranged, andoperating as and for the purposes aforesaid.

V DENNIS LADD.

Witnesses:

HENRY THOMSON, THOMAS J 01mm.

